Most listings are in the $30's per square foot per year. The Downtown Chicago submarket is seeing a a boost in rates. In the last 3 months, the median rate increased $3 per sqft per year. That's a 8% increase in rent.
Compared to the rest of the Chicagoland market, the Downtown Chicago submarket has more expensive rates, and you'll have to negotiate above asking rent to be in this hot submarket.
In the last 90 days, 391 listings have been made available, so you'll want to check back regularly for new listings. About 3% of the office spaces in the Downtown Chicago are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
Even though the median size is 2,800 sqft, there are still 0 spaces below 2,000 sqft. Most properties in this market are around 12 floors. Most buildings in this region were built in 1929 and are Class A.